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Brief information about compared phones: Celkon A64 , OnePlus 3TCelkon A64 2014 year of release. cpu Dual-core 1.2 GHz. screen 4". with resolution 320x480. Smartphone has 0 megapixel front camera and 2 megapixel main camera . OnePlus 3T 2016 year of release. cpu Quad-core (2x2.35 GHz Kryo & 2x1.6 GHz Kryo). screen 5.5". with resolution 1080x1920. Smartphone has 16 megapixel front camera and 16 megapixel main camera . |
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| Display | Technology | TFT | Optic AMOLED | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | |||
| Screen size | 4" inch | 5.5" inch | ||
| Screen area | 47.6 cm2 | 83.4 cm2 | ||
| Screen format | 3:2 (height:width) | 16:9 (height:width) | ||
| Screen to body ratio | 59.1% | 73.1% | ||
| Screen resolution | 320 x 480 px | 1080 x 1920 px | ||
| PPI /points per inch/ | 144 PPI | 401 PPI | ||
| Screen protection | Corning Gorilla Glass 4 | |||
| Camera and Video | Rear camera, main | 2 MP, Single | 16 MP, Single | |
| Camera specs | 2 MP | 16 MP, f/2.0, 1/2.8'', 1.12µm, OIS, PDAF | ||
| Functions | LED flash | LED flash, panorama, HDR | ||
| Video | Yes | 1080p@30fps | ||
| Front camera, selfie | 0.3 MP, Single | 16 MP, Single | ||
| Specifications | VGA | 16 MP, f/2.0, 1/3.1'', 1.0µm | ||
| Performance | Operating system OS | Android 4.2.2 (Jelly Bean) | Android 6.0.1 (Marshmallow), upgradable to Android 8.0 (Oreo); OxygenOS 5.0.4 | |
| Chipset | Qualcomm MSM8996 Snapdragon 821 (14 nm) | |||
| Processor CPU | Dual-core 1.2 GHz | Quad-core (2x2.35 GHz Kryo & 2x1.6 GHz Kryo) | ||
| Graphics processor GPU | Adreno 530 | |||
| External memory | microSD, up to 32 GB | No | ||
| Internal memory | 512 MB, 256 MB RAM | 64/128 GB, 6 GB RAM | ||
| Antutu 7 score | 178923 | |||
| GeekBench 4 Single Core | 1800 | |||
| GeekBench 4 Multi-Core | 4117 | |||
| GeekBench 4 RenderScript | 7474 | |||
| GeekBench 5 Single Core | 335 | |||
| GeekBench 5 Multi-Core | 783 | |||
| General specs | Release date | 2014 | 2016, November | |
| Dimensions (HxWxD) | 124 Х 65 Х 10.5 mm | 152.7 Х 74.7 Х 7.4 mm | ||
| Weight | 125.6 g | 158 g | ||
| Colors | White, Black | Gunmetal, soft gold, Midnight Black | ||
| Battery | 1400 mAh, Li-Ion | 3400 mAh, Non-removable Li-Ion | ||
| Approximate price | 440 EUR | |||
| Battery life | Stand by time- Up to 150 h Talking time- Up to 8 h 20 min | |||
| Body build | Front glass, aluminum body | |||
| Communication and Connectivity | SIM card | Dual SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Network | Show all network frequencies: | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - North America HSDPA 850 / 900 / 1900 / 2100 - Global model CDMA2000 1xEV-DO - North America -4G - LTE band 1(2100), 2(1900), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 30(2300) - North America LTE band 1(2100), 3(1800), 20(800), 38(2600), 40(2300) - Global model | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | |||
| GPRS | Yes | Yes | ||
| Edge | Yes | Yes | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, DLNA, hotspot | ||
| GPS | Yes | Yes, with A-GPS, GLONASS, BDS | ||
| NFC | Yes | |||
| USB | microUSB | 2.0, Type-C 1.0 reversible connector | ||
| Bluetooth | 2.0 | 4.2, A2DP, aptX HD, LE | ||
| Harmful irradiation | SAR EU - 0.42 W/kg (head) 0.55 W/kg (body) | SAR - 0.99 W/kg (head) 0.65 W/kg (body) | ||
| Music and Audio | Radio | FM radio | No | |
| Headphone jack | Yes | Yes | ||
| Others | Active noise cancellation with dedicated mic | |||
| Other features | Dop | Sensors Accelerometer | Sensors Fingerprint (front-mounted), accelerometer, gyro, proximity, compass - Fast battery charging (Dash Charge) | |
